code: def test_database_download_disallowed_for_mutable(app_client):
      # Use app_client because we need a file database, not in-memory
      response = app_client.get("/fixtures")
      soup = Soup(response.content, "html.parser")
      assert len(soup.findAll("a", {"href": re.compile(r"\.db$")})) == 0
      assert app_client.get("/fixtures.db").status_code == 403
  
imports: from bs4 import BeautifulSoup
  from datasette.utils import allowed_pragmas
  from .fixtures import app_client, app_client_base_url_prefix, app_client_shorter_time_limit, app_client_two_attached_databases, make_app_client, METADATA
  from .utils import assert_footer_links, inner_html
  import copy
  import json
  import pathlib
  import pytest
  import re
  import urllib.parse
label_desc: Use image node_id 9 for calling a global function with example usage: test_database_download_disallowed_for_mutable(app_client) without return types